Filling stop motion for looms



June 19, 1934. E, GlLLlGAN 1,963,266

FILLING STOP MOTION FOR LOOMS Filed April 26, 1933 It? I J7 4 4 o if Q o ANVENTOR, Edward 1:! 61714 4.

ATTORNEY.

Patented June 19, 1934 UNITED STATES PATENT OFFICE.

2 Claims.

This invention relates to improvements in looms and is directed more particularly to stop mechanism therefor.

The principal objects of the invention are directed to the provision in a loom of an improved stop mechanism which is simple in form and efficient in its operation.

In connection with looms it is desirable to stop the operation thereof in case the weft or filling yarn breaks as it is being passed through the shed. If the loom is stopped when the weft or filling yarn breaks the yarn may be promptly tied together so that perfect weaving results.

It is to the provision of stop mechanism operable as the weft or filling yarn breaks that the novel features of the invention are directed and as a special feature of the invention the novel mechanism thereof overcomes objections and disadvantages of present day stop mechanism, as is hereinafter explained.

Various novel features of the invention will be observed from the following description thereof taken in connection with the accompanying drawing, in which 6 Fig. 1 is a side elevational view of certain parts of a loom having the novel features of the invention associated therewith.

Fig. 2 is a sectional plan view taken on the line 2-2 of Fig. 1, and

Fig. 3 is a sectional view taken on the line 33 of Fig. 1.

Referring to the drawing, the invention will now be described in detail. Such parts of a loom are shown in the drawing as are necessary to describe the features of the invention.

A breast beam is represented at 2 and a lathe at 4 which has the usual reed 6 and reed cap 8 at the upper side thereof. The lathe swings back and forth towards and away from the breast beam and a shuttle 10 is thrown longitudinally of the lathe and through the shed to weave its weft yarn with the warp elements passing through the reed. It is to stop the loom in case the weft yarn breaks that the novel mechanism of the invention is directed.

The usual shipper rod or shaft 12 is oscillatable beneath the breast beam 2 and is connected to mechanism (not shown) for disconnecting the loom from its source of power. This rod has a knock-off lever 14 fixed thereto. As is common with looms the parts are arranged so that the rod 12 on being rotated clockwise will disconnect the driving mechanism to stop the operation of the loom.

A bracket 16 is fixed to the breast beam 2 and has pivoted thereto as at 17, a stop arm 18 which is normally urged upwardly or' clockwise by a spring 20 around pivot 17. This arm 18 is limited in its clockwise movement by a stop 24 carried by the bracket 16 and against which the upper end v of the arm abuts.

A stud 26 projects outwardly from the arm 18 overlying and engageable with the lever 14. As arm 18 is swung counterclockwise, the lever 14 will be swung clockwise by means of stud 26.

A bracket 26 is fixed to the lathe land has in its upper end an oscillatable shaft 28 to which is fixed a crank 30 and a feeler hub 32. One or more feelers such as 34 are fixed to and extend from the hub 30 so as to overlie slots such as 33 in the upper side of the lathe. A dagger lever 36 is pivoted at 38 in the lower side of the bracket 26 and is connected by a link 46 and rod 40 to the crank 30 at 39.

The link 46 has an inwardly extending trans- '75 verse portion 47 which has a threaded hole to receive the lower threaded end 40' of rod member 40. A nut as shown is in engagement with the rod so the rod may be adjusted in the link and locked in place by the nut. This is important as it facilitates accurate setting of the parts. f

The lower end of link 46 rocks on a stud 45 in threaded engagement with a suitable hole in the dagger lever 36 and is adapted to abut the dagger which will be described. 7

A dagger 53 has a shank portion 51, which is preferably square and receivable in a square hole in the outer end of lever 36. The shank 51 is slidable in the lever and is held-in various positions of adjustment by stud 45. A cam 56 is carried by bracket 16 and has an upper curved surface 55 on which the dagger slides. V

A pin 48 extends inwardly from dagger lever 36.

A spring 50 overlies the pin and has its inner end secured to the underside of the lathe as by a washer and screw 52 and 5 1. This is important as it is desired to have the dagger slide on the cam surface 55 and to abut lever 18 when the weft yarn is broken.

The lathe swings towards and away from the beam in the operation of the loom and the shuttle is thrown back and forth across the lathe to carry the weft yarn back and forth therealong between the warp elements passing through the reed.

As the lathe swings to the left the dagger 53 slides on and traverses the cam surface 55 which causes the dagger lever 36 to swing counter clockwise to some extent. By means of link 46 and rod 40 the crank 30 and feeler hub are oscillated 110 clockwise until feelers 34 bear on the weft yarn extending across the lathe which is more or less taut. The feelers are held by the weft yarn against a further swinging movement so that dagger 53 will pass over the upper end of lever 18.

As the lathe swings to the left when the weft yarn is broken so that it is no longer taut the feelers ,will then swing downwardly into the slot 33 of theilathe, This allows the lever 36 to swing downwardly so that the dagger may follow cam surface 55 and bring up against the upper end of the lever 18. In this case the movement of the lathe towards the breast beam causesthe lever 18 to be swung counter-clockwise whereby its stud 26 abuts lever 14 to swing it downwardly thus shutting off the power.

While the weft yarn is taut theda'g'ger in its movements to the left will pass over the end of lever 18 while when the yarn is broken and slack the. le e zlfi wi ls-be, a e ,br h d g n thisway the operation of the loom is stopped acco ng r asthe-rarn eak v s In -,the novel construction of this invention the link .afi-a dar fifi ar a st le o t t h movement and operation of the parts may be cont olle wi h nc qs l m tsl I ordina stop otion pparatus, due to constant jarring and vibration, the part correspondipg-tothe da ger often becomes loose so that it twists a d th n n e. m v o t e lathe said part strikes various of the other parts and uses ma a; 1 The;li-nk,46 is formed as shown in Fig. 3 so that the -rod li) is connected thereto over the dagger lever wherebythe pull is overthelever. The stud 515 -serves for the pivotal connection for the link as wellsas binds the dagger to;the dagger lever. The spring 50 tends to yieldingly hold the dagser,.- n o,.;the c face: and p t v t f jumping gupwardly so that it will not pass over the. end of lever 18 when it is supposed to strike the ame: .c-Jr ed vi e s, m ii f m ye e ie t in it qper ti n an -v.15 p e o operating to bring aboutmovements of the lever 18 whenever the e ty break I Whatdesire to claim by Letters Patent of the Un tedfi at s, 1 v s ,s

1. In a filling stop motion having a relatively movable,breastbeam, lathe, shipperlever and cam, a :dagger leverpivoted on said lathe provided with a rectangular opening of a certain width ,and, heightin its forward end, a ,feeler crank oscillatable on said lathe, a connecting rod device having its upper end pivoted to said feeler crank and provided with an opening in its lower end, a dagger having a rectangular shank of slightly less width and height than said rectangular opening receivable therein and a forward cam part extending from the forward end of said shank at substantially right angles thereto which is slidable on said, cam, said dagger being held against turning relative to said dagger lever by the sides of said shank abutting the inner sides of said opening, a single binding stud receivable said opening in the lower end of said connecting device threaded in a side of said dagger lever having its inner end abutting said rectangular shank to pivotally connect said connecting device to s'a'id dagger 'lever'and bind said shank in said opening and prevent longitudinal movement thereof, a pin extending from said dagger lever in substantial parallelism with said forward cam part of the dagger and aspring having one end secured to said lathe and its other end'over'lying said pin.

, In a. filling stop motion having a relatively movable breast beam, lathe, shipper lever and cam, a dagger lever pivoted on said lathe provided with a rectangularopening of a certain width and height in its, forward end, afieler crank oscillata le ,On saidlathe, a dagger havingfarectangular shankof slightly less width and height than said- ;rectangular opening receivable thereand; a forward cam part'extendin'g from the forward end ofsaid shank at 'substantiallyrig'ht angles thereto which is slidable on said cam, said dagger being :held against turning relative .to said dagger lever by the sides of said shankabutting theinner sidesof said opening, a binding stud threaded in a side of said dagger lever having its inner end abutting said rectangular shank to bind said shank in said opening and preventlongitudinal rnovement thereofl a connection between said feeler crank and said dagger lever consisting ofa. rod pivoted at its upper end tosaidfeeler crank having a lower threaded endportionand a n rovid d. w t a h e e b et a s' 11pr a r ce v n i l we .i 'd ie d' rtion of the rod and an opening inits lower end receiving said binding stud whereby'the'lowere'nd of said rod is pivoted to saiddagger lever, a pin extending from said dagger lever insubstantial parallelism with said forward cam part of the daggenand a spring having one end secured to said lathe and its other end overlying'sai'd' pm.

EDWARD :J. GILLIGAN.

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